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<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">[root@k8s-master ~]# java -version</span><br><span class="line">openjdk version &quot;1.8.0_292&quot;</span><br><span class="line">OpenJDK Runtime Environment (build 1.8.0_292-b10)</span><br><span class="line">OpenJDK 64-Bit Server VM (build 25.292-b10, mixed mode)</span><br></pre></td></tr></table></figure>
<p>2.下载tomcat，jenkins安装包</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">wget https:&#x2F;&#x2F;mirrors.tuna.tsinghua.edu.cn&#x2F;apache&#x2F;tomcat&#x2F;tomcat-8&#x2F;v8.5.69&#x2F;bin&#x2F;apache-tomcat-8.5.69.tar.gz</span><br><span class="line">wget http:&#x2F;&#x2F;mirrors.jenkins.io&#x2F;war-stable&#x2F;latest&#x2F;jenkins.war</span><br></pre></td></tr></table></figure>
<p>3.配置环境变量<br>vim /etc/profile 打开配置文件，按 i 进入编辑模式，在profile文件尾部 unset -f pathmunge 后面添加如下内容：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line">unset i</span><br><span class="line">unset -f pathmunge</span><br><span class="line">export JAVA_HOME&#x3D;&#x2F;usr&#x2F;local&#x2F;java&#x2F;jdk1.8.0_221</span><br><span class="line">export JRE_HOME&#x3D;$&#123;JAVA_HOME&#125;&#x2F;jre</span><br><span class="line">export CATALINA_HOME&#x3D;&#x2F;usr&#x2F;local&#x2F;tomcat8</span><br><span class="line">export CLASSPATH&#x3D;.:$&#123;JAVA_HOME&#125;&#x2F;lib:$&#123;JRE_HOME&#125;&#x2F;lib:$CLASSPATH</span><br><span class="line">export JAVA_PATH&#x3D;$&#123;JAVA_HOME&#125;&#x2F;bin:$&#123;JRE_HOME&#125;&#x2F;bin:$&#123;CATALINA_HOME&#125;&#x2F;bin</span><br><span class="line">export PATH&#x3D;$PATH:$&#123;JAVA_PATH&#125;:$PATH</span><br></pre></td></tr></table></figure>
<p>4.配置tomcat并启动jenkins</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">mkdir &#x2F;usr&#x2F;local&#x2F;tomcat8</span><br><span class="line">tar -zxvf apache-tomcat-8.5.37.tar.gz -C &#x2F;usr&#x2F;local&#x2F;tomcat8</span><br><span class="line">mv jenkins.war &#x2F;usr&#x2F;local&#x2F;tomcat8&#x2F;webapps</span><br><span class="line">#启动tomcat</span><br><span class="line">&#x2F;usr&#x2F;local&#x2F;tomcat8&#x2F;bin&#x2F;startup.sh</span><br><span class="line">#停止tomcat</span><br><span class="line">&#x2F;usr&#x2F;local&#x2F;tomcat8&#x2F;bin&#x2F;shutdown.sh</span><br></pre></td></tr></table></figure>
<p><a target="_blank" rel="noopener" href="http://localhost:8080/">http://localhost:8080</a> 访问jenkins</p>
<h3 id="自动化脚本"><a href="#自动化脚本" class="headerlink" title="自动化脚本"></a>自动化脚本</h3><p>在jenkins的后端准备好自动化部署脚本k8s_auto_deploy.sh，事先做好公私钥认证，使得jenkins能够访问k8s-master</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br></pre></td><td class="code"><pre><span class="line">#!&#x2F;bin&#x2F;bash</span><br><span class="line">URL&#x3D;http:&#x2F;&#x2F;106.12.189.57&#x2F;root&#x2F;java-demo.git</span><br><span class="line">Starttime&#x3D;&#96;date +&quot;%Y-%m-%d_%H-%M-%S&quot;&#96;</span><br><span class="line">Method&#x3D;$1</span><br><span class="line">Branch&#x3D;$2</span><br><span class="line">t1&#x3D;&#96;date +&quot;%Y-%m-%d %H:%M:%S&quot;&#96;</span><br><span class="line"></span><br><span class="line">     #代码克隆至jenkins后端</span><br><span class="line">clone_code()&#123;</span><br><span class="line">    cd &#x2F;root&#x2F;.jenkins&#x2F;workspace&#x2F;jenkins_project &amp;&amp; git clone -b $Branch $&#123;URL&#125;&amp;&amp; echo &quot;Clone Finished&quot;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"> #代码打包压缩并远程推送至k8s-master-1的nginx镜像制作目录</span><br><span class="line">Pack_scp()&#123;</span><br><span class="line">    cd &#x2F;root&#x2F;.jenkins&#x2F;workspace&#x2F;jenkins_project&#x2F;java-demo&#x2F; &amp;&amp; tar cvzf java-demo.tar.gz * &amp;&amp; echo Package Finished</span><br><span class="line">    cp java-demo.tar.gz &#x2F;data&#x2F;Dockerfile&#x2F;java-demo&#x2F; &amp;&amp; cd &#x2F;data&#x2F;Dockerfile&#x2F;java-demo&#x2F; &amp;&amp; tar xvf java-demo.tar.gz &amp;&amp; rm -f java-demo.tar.gz</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"> #远程操作k8s-master-1节点，进行镜像制作并推送至harbor镜像仓库</span><br><span class="line">build_iamge()&#123;</span><br><span class="line">    cd &#x2F;data&#x2F;Dockerfile&#x2F;java-demo&#x2F; &amp;&amp; .&#x2F;build.sh $&#123;BUILD_NUMBER&#125; &amp;&amp; echo &#39;build_image and push_harbor success!&#39;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">    #对k8s集群中的nginx的pod应用进行升级</span><br><span class="line">app_update()&#123;</span><br><span class="line">    sed -ri &#39;s@image: .*@image: 106.12.37.109&#x2F;library&#x2F;tomcat-java-demo:$&#123;BUILD_NUMBER&#125;@g&#39;  &#x2F;data&#x2F;mainfest&#x2F;deployment.yaml</span><br><span class="line">    kubectl set image deployment&#x2F;java-demo java-demo&#x3D;106.12.37.109&#x2F;library&#x2F;tomcat-java-demo:$&#123;BUILD_NUMBER&#125; -n default --record&#x3D;true</span><br><span class="line">                t2&#x3D;&#96;date +&quot;%Y-%m-%d %H:%M:%S&quot;&#96;</span><br><span class="line">    start_T&#x3D;&#96;date --date&#x3D;&quot;$&#123;t1&#125;&quot; +%s&#96;</span><br><span class="line">    end_T&#x3D;&#96;date --date&#x3D;&quot;$&#123;t2&#125;&quot; +%s&#96;</span><br><span class="line">    total_time&#x3D;$((end_T-start_T))</span><br><span class="line">    echo &quot;deploy success,it has been spent $&#123;total_time&#125; seconds&quot;   </span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">    #k8s集群中的pod应用进行回滚</span><br><span class="line">app_rollback()&#123;</span><br><span class="line">     kubectl rollout undo deployment&#x2F;java-demo  -n default</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">    #进行k8s集群自动部署的主函数</span><br><span class="line">main()&#123;</span><br><span class="line">    case $Method in </span><br><span class="line">    deploy)</span><br><span class="line">        clone_code</span><br><span class="line">        Pack_scp</span><br><span class="line">        build_iamge</span><br><span class="line">        app_update</span><br><span class="line">    ;;</span><br><span class="line">    rollback)</span><br><span class="line">        app_rollback</span><br><span class="line">    ;;</span><br><span class="line">    esac</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line">#执行主函数命令</span><br><span class="line">main $1 $2</span><br><span class="line"></span><br></pre></td></tr></table></figure>
<p>构建镜像代码</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line">#!&#x2F;bin&#x2F;bash</span><br><span class="line">#镜像版本变量</span><br><span class="line">version&#x3D;$1</span><br><span class="line">#编译项目代码</span><br><span class="line">mvn clean package -Dmaven.test.skip&#x3D;true</span><br><span class="line">#解压项目代码至新文件夹</span><br><span class="line">unzip target&#x2F;*.war -d target&#x2F;ROOT</span><br><span class="line">#编写Dockerfile</span><br><span class="line">cat &gt; Dockerfile &lt;&lt;EOF</span><br><span class="line">FROM lizhenliang&#x2F;tomcat   </span><br><span class="line">LABEL maintainer alex</span><br><span class="line">RUN rm -rf &#x2F;usr&#x2F;local&#x2F;tomcat&#x2F;webapps&#x2F;*</span><br><span class="line">COPY target&#x2F;ROOT &#x2F;usr&#x2F;local&#x2F;tomcat&#x2F;webapps&#x2F;ROOT </span><br><span class="line">EOF</span><br><span class="line">#build镜像并推送</span><br><span class="line">docker build -t 106.12.37.109&#x2F;library&#x2F;tomcat-java-demo:$version .</span><br><span class="line">docker push 106.12.37.109&#x2F;library&#x2F;tomcat-java-demo:$version</span><br><span class="line"></span><br></pre></td></tr></table></figure>

<h2 id="参数化构建"><a href="#参数化构建" class="headerlink" title="参数化构建"></a>参数化构建</h2><p>web端访问jenkins<br><img src="https://img-blog.csdnimg.cn/561f5a71b3aa4a8aa21c8a228c567150.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTUwOTU4Mg==,size_16,color_FFFFFF,t_70" alt="请添加图片描述"><br>创建一个jenkins_project项目，并编辑配置<br><img src="https://img-blog.csdnimg.cn/9f4f2c9fc19a4f3fbab8e4c9a20ff14d.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTUwOTU4Mg==,size_16,color_FFFFFF,t_70" alt="请添加图片描述"><br><img src="https://img-blog.csdnimg.cn/b194cf37cb1c432899651f832f898f59.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTUwOTU4Mg==,size_16,color_FFFFFF,t_70" alt="请添加图片描述"><br>将jenkins的公钥配置到gitlab服务的web端，使得jenkins可以直接拉取代码无需认证<img src="https://img-blog.csdnimg.cn/4e21fcf761fb48bb904d5a1c8e4508bf.png" alt="请添加图片描述"><br><img src="https://img-blog.csdnimg.cn/689145a726d54c6393aaad1f6ff12ff0.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NTUwOTU4Mg==,size_16,color_FFFFFF,t_70" alt="请添加图片描述"><br>或者使用https方式来取代码 ，我测试中用的是https，生产中最好用ssh<br>后续验证就不写了</p>
</article><div class="post-copyright"><div class="post-copyright__author"><span class="post-copyright-meta">文章作者: </span><span class="post-copyright-info"><a href="mailto:undefined">Alex</a></span></div><div class="post-copyright__type"><span class="post-copyright-meta">文章链接: </span><span class="post-copyright-info"><a href="http://blogtest.alexcld.com/posts/63478.html">http://blogtest.alexcld.com/posts/63478.html</a></span></div><div class="post-copyright__notice"><span class="post-copyright-meta">版权声明: </span><span class="post-copyright-info">本博客所有文章除特别声明外，均采用 <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/" target="_blank">CC BY-NC-SA 4.0</a> 许可协议。转载请注明来自 <a href="http://blogtest.alexcld.com" target="_blank">Alexcld</a>！</span></div></div><div class="tag_share"><div class="post-meta__tag-list"><a class="post-meta__tags" href="/tags/k8s-jenkins%E5%AE%9E%E7%8E%B0CI%EF%BC%8CCD/">k8s+jenkins实现CI，CD</a></div><div class="post_share"><div class="social-share" 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